head to head · open source
Home Assistant vs OpenMQTTGateway
Home Assistant has 91,964 GitHub stars, 39,194 forks, 3,527 open issues and last shipped yesterday. OpenMQTTGateway has 4,116 stars, 910 forks, 48 open issues and last shipped 17 days ago. Home Assistant leads on adoption by 2,134% (91,964 vs 4,116 stars). Home Assistant is written in Python under Apache-2.0; OpenMQTTGateway is written in C++ under GPL-3.0. Home Assistant has attracted 43% as many forks as stars, OpenMQTTGateway 22%. Home Assistant was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 1 topic tag (home-automation), so they are genuine substitutes rather than adjacent tools.
Two open source projects, one decision. Both are free and self-hostable — the differences are community size, license terms, language stack and release pace.
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Side by side
| Home Assistant | OpenMQTTGateway | |
|---|---|---|
| GitHub stars | ★ 92K | ★ 4.1K |
| License | Apache-2.0 | GPL-3.0 |
| Written in | Python | C++ |
| Last push | 2026-11-04 | 2026-10-19 |
| Forks | ⑂ 39K | ⑂ 910 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Home Assistant if
- You weight community size — 92K stars and counting
- You want the Apache-2.0 license terms
- Your stack matches Python
- You value the larger contributor base for long-term maintenance
pick OpenMQTTGateway if
- You want the OpenMQTTGateway feature set and don't need the biggest community
- You prefer the GPL-3.0 license terms
- Your stack matches C++
- You evaluated both and OpenMQTTGateway fits your workflow better
About Home Assistant
Home Assistant Chat Status ================================================================================= Open source home automation that puts local control and privacy first. Powered by a worldwide community of tinkerers and DIY enthusiasts. Perfect to run on a Raspberry Pi or a local server. Check out home assistant.io for a demo , installation instructions , tutorials and documentation . Featured integrations The system is built using a modular approach so support for other devices or actions can be implemented easily. See also the section on architecture and the section on creating your own components…
read the full Home Assistant overview →
About OpenMQTTGateway
OpenMQTTGateway aims to unify various technologies and protocols into a single firmware. This reduces the need for multiple physical bridges and streamlines diverse technologies under the widely used MQTT protocol. Sponsors Documentation The documentation is here New to OpenMQTTGateway? Follow the Getting Started guide to flash a board from your browser and see your first sensor data in about 15 minutes. The reference sheet, with the list of all functions, pinouts is here Upload Upload OpenMQTTGateway directly from the upload page (no additional software required) or build your own configuration with PlatformIO…
read the full OpenMQTTGateway overview →
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Frequently asked questions
Is Home Assistant or OpenMQTTGateway more popular?
Home Assistant has 91,964 GitHub stars and OpenMQTTGateway has 4,116. Home Assistant has the larger community by that measure.
Are Home Assistant and OpenMQTTGateway free?
Both are open source. Home Assistant is licensed under Apache-2.0 and OpenMQTTGateway under GPL-3.0. Neither carries a licence fee.
What is the difference between Home Assistant and OpenMQTTGateway?
Home Assistant is written in Python and OpenMQTTGateway in C++. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, Home Assistant or OpenMQTTGateway?
Choose Home Assistant if you want the larger community (91,964 stars) or its Apache-2.0 licence terms. Choose OpenMQTTGateway if its feature set, stack or GPL-3.0 licence fits better. Both are self-hostable.